DOI: 10.1002/2014MS000375
Scopus记录号: 2-s2.0-85027927850
论文题名: A multiscale modeling framework model (superparameterized CAM5) with a higher-order turbulence closure: Model description and low-cloud simulations
作者: Wang M ; , Larson V ; E ; , Ghan S ; , Ovchinnikov M ; , Schanen D ; P ; , Xiao H ; , Liu X ; , Rasch P ; , Guo Z
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期: 2 起始页码: 484
结束页码: 509
语种: 英语
英文关键词: Aerosols
; Clouds
; Turbulence
; Cloud parameterizations
; Community atmosphere model
; Higher-order
; MMF
; Multi-scale Modeling
; SPCAM5
; Transition regions
; Turbulence closures
; Precipitation (meteorology)
; cloud microphysics
; estimation method
; parameterization
; performance assessment
; precipitation (climatology)
; simulation
; stratocumulus
; turbulence
; turbulent flow
英文摘要: In this study, a higher-order turbulence closure scheme, called Cloud Layers Unified By Binormals (CLUBB), is implemented into a Multiscale Modeling Framework (MMF) model to improve low-cloud simulations. The performance of CLUBB in MMF simulations with two different microphysics configurations (one-moment cloud microphysics without aerosol treatment and two-moment cloud microphysics coupled with aerosol treatment) is evaluated against observations and further compared with results from the Community Atmosphere Model, Version 5 (CAM5) with conventional cloud parameterizations. CLUBB is found to improve low-cloud simulations in the MMF, and the improvement is particularly evident in the stratocumulus-to-cumulus transition regions. Compared to the single-moment cloud microphysics, CLUBB with two-moment microphysics produces clouds that are closer to the coast and agrees better with observations. In the stratocumulus-to-cumulus transition regions, CLUBB with two-moment cloud microphysics produces short-wave cloud forcing in better agreement with observations, while CLUBB with single-moment cloud microphysics overestimates short-wave cloud forcing. CLUBB is further found to produce quantitatively similar improvements in the MMF and CAM5, with slightly better performance in the MMF simulations (e.g., MMF with CLUBB generally produces low clouds that are closer to the coast than CAM5 with CLUBB). Improved low-cloud simulations in MMF make it an even more attractive tool for studying aerosol-cloud-precipitation interactions. Key Points: A higher-order closure is implemented in SPCAM5 CLUBB performs better in two-moment microphysics than in one-moment microphysics CLUBB produces quantitatively similar improvements in the MMF and CAM5 © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76015
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Atmospheric Science and Global Change Division, Pacific Northwest National Laboratory, Richland, Washington, United States; Institute for Climate and Global Change Research and, School of Atmospheric Sciences, Nanjing University, Nanjing, China; University of Wisconsin - Milwaukee, Milwaukee, Wisconsin, United States; Department of Atmospheric Science, University of Wyoming, Laramie, Wyoming, United States; Institute of Atmospheric Physics, Beijing, China; Climate Change Research Center, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Wang M,, Larson V,E,et al. A multiscale modeling framework model (superparameterized CAM5) with a higher-order turbulence closure: Model description and low-cloud simulations[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(2)